Automobile-fan



UNITED STATES PATENT OFFICE.

I LE ROY WILLOUR, OF ASHLAND, OHIO, ASSIGNOR TO THEI ASHLAND PRODUCTS COMPANY, OF ASHLAND, OHIO, A CORPORATION OF OHIO.

AUToMoBTLE-FAN.

T 0 all wlw/a 'it may conce/rn.'

Be it known that I, LE ROY WILLOUR, a citizen ofthe United States, residing at Ashland, in the county of Ashland and State of Ohio, have invented certain newA and useful Improvements in Automobile-F ans, of which the following is a specification.

My invention relates to improvements in rotatable fans for automobiles, trucks or the like.

An important object of the invention is to provide a fan of the above-mentioned character, so constructed that it will throw the maximum amount of air with the minimum number of blades.

A further object of the inventionv is to provide a fan of the above-mentioned character, which is simple in construction and cheap to manufacture.

Other objects and advantages of they invention will be apparent during the course of the following description. i

In the accompanying drawings forming a part of this specification, and in which like numerals are employed to designate like parts throughout the same:

Figure 1 is a side elevation of a fan employing my invention;

F ig. 2 is an edge elevation ofthe same; and

Fig. 3 is a perspective view of one blade removed.

In the drawings, wherein for the purpose of illustration is shown al `preferred embodiment of my invention, the numeral 5 designates a tubular hub, to which is secured a grooved pulley 6 to rotate the same.

This grooved pulley receives its rotation byv engagement with the usual belt, not shown. The tubular hub 5 is rotatable Vupon the usual fan shaft. At its forward end the tubular hub 5 is provided with a circular plate or flange 7 as shown.

The fan embodies a plurality of blades 8, four in number being shown. I prefer to employ four of these blades, while it is understood that this number may be increased or decreased as desired. The blades 8 embody inner tapered portions 9, adapted to be assembled upon the plate 7 around the end of the hub 5 in contacting relation, and secured to the plate 7 by screws 10 or the like. This contacting relation serves to strengthen or brace the connection of the blades with the plate 7.

specification of Letters Patent. Y Patented June 29, 1920, Appncation filed May e, 191s. sei-iai No. 295,132.

Each blade 8 has a plurality of bladeelements l1 stamped therefrom. These blade-elements ll are radially disposed and arranged at a transverse angle with respect to the axis of rotation of the fan. The inner portion 9 serves to connect the inner endsv of the blade-elements 11, while their outer ends are connected by a strip 12. The blade-elementsv 1l of each blade are preferably offset vlaterally with respect to each other, so that one blade-element projectsV forwardly of the other blade-element, while the other blade-element projects rearwardly of the other blade-element for a substantial distance, such as from three-fourths to one inch, while this length may be suitably variedas found advantageous. This offset arrangement is effected by bending the ends 9 of the portion 9, forwardly and rearwardly, as shown. It is thus apparent that the two blade-elements 1l lcover a greater cross transverse, area, with the same pitch, than could be covered by a single bladeelement having the saine pitch. It is also apparent that each blade, embodying the plurality of blade-elements, two being shown for the purpose of illustration, is an integral structure, which is preferably stamped from suitable stiff sheet steel, while other material may be employed.

In actual practice, I have found that a fan constructed in accordance with my invention, will throw about twice the Volume of air as the ordinary four-blade fan.

It is to be understood that the form of my invention herewith shown and described is to be taken as the preferred example of the same, and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope ofthe subjoined claims.

aving thus described my invention, I claim:

1. A fan of the character described, embodying a hub and a plurality of blades secured to the .hub, each blade comprising a section of sheet metal provided adjacent its ends with transverse slits, a longitudinal slit connectingy said transverse slits and communicating with said slits approximately centrally thereof, thereby formingy a pair of blades connected at their inner and outer'ends, said blades being disposed at an angle to the body of said sheet metal.

2. A fan of the character described, embodying a hub and a plurality of blades secured to the hub, each blade comprising a `section of sheet metal provided adjacent its tion of sheet metal having a pair of bladeelements stamped therefrom, one vblade-element of eachY pair having its forward edge projecting beyond the forward edge ofthe other blade-element in the same pair, such other blade-element having its rear edge projecting beyond the rear edge of the firstnamed blade element in the same pair, and transverse portions connecting the inner and outer ends of each pair of blades.

In testimony whereof I aix my signature in presence of two witnesses.,

p LE ROY WILLOUR. Witnesses :l

ELIZABETH NELSON, ADA RHEA. 

